/* =====================================================================
   Mia Digital — stylesheet
   Bảng màu lấy từ logo: xanh pastel #8CC3F7, nền kem #FAF9F7, chữ đen.
   ===================================================================== */

:root {
  --blue:        #8cc3f7;
  --blue-600:    #4f9ce8;
  --blue-700:    #2a7ac9;
  --blue-900:    #113f6d;
  --blue-tint:   #eaf4fe;
  --blue-tint-2: #f5fafe;

  --cream:       #faf9f7;
  --white:       #ffffff;
  --ink:         #111318;
  --ink-2:       #3d434e;
  --ink-3:       #6b7280;
  --line:        #e6e6e2;
  --line-2:      #f0efec;

  --green:       #10855f;
  --green-tint:  #e7f6ef;
  --amber:       #b26b00;
  --amber-tint:  #fdf3e2;

  --radius:      14px;
  --radius-sm:   10px;
  --radius-lg:   22px;
  --shadow-sm:   0 1px 2px rgba(17, 19, 24, .05), 0 1px 3px rgba(17, 19, 24, .04);
  --shadow:      0 2px 6px rgba(17, 19, 24, .05), 0 10px 28px rgba(17, 19, 24, .07);
  --shadow-lg:   0 8px 20px rgba(17, 19, 24, .07), 0 24px 60px rgba(17, 19, 24, .10);

  --max:         1180px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
          'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
}

/* --------------------------- reset ------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-700); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.25; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.1rem); letter-spacing: -.03em; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.15rem); letter-spacing: -.025em; }
h3 { font-size: 1.16rem; }
p  { margin: 0 0 1em; }
ul { margin: 0; padding: 0; }
li { list-style: none; }
button { font: inherit; }

/* --------------------------- layout ------------------------------ */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.section { padding: 74px 0; }
.section--tight { padding: 52px 0; }
.section--cream { background: var(--cream); }
.section--white { background: var(--white); }
.section--tint  { background: var(--blue-tint-2); }
.section--dark  { background: var(--blue-900); color: #cfe3f6; }
.section--dark h2, .section--dark h3 { color: #fff; }

.section-head { max-width: 640px; margin-bottom: 34px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--ink-3); margin-bottom: 0; font-size: 1.03rem; }

.eyebrow {
  display: inline-block; font-size: .75rem; font-weight: 700;
  letter-spacing: .13em; text-transform: uppercase;
  color: var(--blue-700); margin-bottom: 12px;
}

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* --------------------------- buttons ----------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 650; font-size: .95rem; cursor: pointer; white-space: nowrap;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease, border-color .14s ease;
  text-decoration: none !important;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--blue-700); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--blue-900); box-shadow: var(--shadow); }
.btn-zalo { background: #0068ff; color: #fff; box-shadow: var(--shadow-sm); }
.btn-zalo:hover { background: #0055d4; }
.btn-ghost { background: var(--white); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue-600); color: var(--blue-700); }
.btn-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.3); }
.btn-light:hover { background: rgba(255,255,255,.2); }
.btn-sm { padding: 9px 16px; font-size: .875rem; }
.btn-block { width: 100%; }

/* --------------------------- header ------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(250, 249, 247, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar {
  background: var(--blue-900); color: #bcd8f2;
  font-size: .82rem; padding: 7px 0;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar a { color: #fff; font-weight: 600; }
.topbar-note { display: flex; align-items: center; gap: 8px; min-width: 0; }
.topbar-note span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-links { display: flex; gap: 18px; white-space: nowrap; }

.nav { display: flex; align-items: center; gap: 20px; height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none !important; }
.brand img { width: 40px; height: 40px; border-radius: 9px; object-fit: cover; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 800; color: var(--ink); font-size: 1.06rem; letter-spacing: -.02em; }
.brand-sub { font-size: .69rem; color: var(--ink-3); letter-spacing: .07em; text-transform: uppercase; }

.nav-menu { display: contents; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.nav-links a {
  padding: 9px 13px; border-radius: 9px; color: var(--ink-2);
  font-weight: 550; font-size: .94rem; text-decoration: none !important;
}
.nav-links a:hover { background: var(--blue-tint); color: var(--blue-900); }
.nav-links a.active { color: var(--blue-700); background: var(--blue-tint); font-weight: 650; }

/* --- mục "Sản phẩm" có menu con --- */
.nav-item { position: relative; }
.nav-sub-toggle {
  display: flex; align-items: center; gap: 5px;
  padding: 9px 13px; border: 0; border-radius: 9px; background: none; cursor: pointer;
  color: var(--ink-2); font-weight: 550; font-size: .94rem; font-family: inherit;
}
.nav-sub-toggle svg { width: 15px; height: 15px; transition: transform .16s ease; }
.nav-item:hover > .nav-sub-toggle,
.nav-item.open > .nav-sub-toggle { background: var(--blue-tint); color: var(--blue-900); }
.nav-item.active > .nav-sub-toggle { color: var(--blue-700); background: var(--blue-tint); font-weight: 650; }
.nav-item:hover > .nav-sub-toggle svg,
.nav-item.open > .nav-sub-toggle svg { transform: rotate(180deg); }

.nav-sub {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 70;
  min-width: 290px; padding: 8px;
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s;
}
.nav-item:hover > .nav-sub, .nav-item.open > .nav-sub {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-sub a {
  display: block; padding: 10px 12px; border-radius: var(--radius-sm);
  text-decoration: none !important;
}
.nav-sub a b { display: block; color: var(--ink); font-size: .93rem; font-weight: 650; }
.nav-sub a span { display: block; color: var(--ink-3); font-size: .8rem; margin-top: 1px; }
.nav-sub a:hover { background: var(--blue-tint-2); }
.nav-sub a:hover b { color: var(--blue-700); }
.nav-sub a.active { background: var(--blue-tint); }
.nav-sub a.active b { color: var(--blue-700); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none; margin-left: auto; background: var(--white); border: 1px solid var(--line);
  border-radius: 10px; width: 42px; height: 42px; align-items: center; justify-content: center;
  cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }

/* --------------------------- hero -------------------------------- */
.hero {
  background:
    radial-gradient(1100px 500px at 88% -12%, rgba(140,195,247,.42), transparent 62%),
    radial-gradient(700px 420px at 4% 108%, rgba(140,195,247,.20), transparent 60%),
    var(--cream);
  padding: 78px 0 64px;
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 54px; align-items: center; }
.hero h1 { margin-bottom: 18px; }
.hero-lead { font-size: 1.1rem; color: var(--ink-2); max-width: 52ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 22px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: .92rem; color: var(--ink-3); }
.hero-points li { display: flex; align-items: center; gap: 7px; }
.tick { color: var(--green); font-weight: 800; }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--line);
  padding: 6px 14px 6px 8px; border-radius: 999px;
  font-size: .82rem; font-weight: 600; color: var(--ink-2);
  box-shadow: var(--shadow-sm); margin-bottom: 20px;
}
.pill b { background: var(--blue-tint); color: var(--blue-700); padding: 2px 9px; border-radius: 999px; font-size: .75rem; }

/* hero card */
.hero-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-lg);
}
.hero-card h3 { margin-bottom: 4px; }
.hero-card .muted { font-size: .9rem; color: var(--ink-3); margin-bottom: 18px; }
.mini-list { display: grid; gap: 10px; margin-bottom: 20px; }
.mini-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding: 11px 14px; border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  background: var(--blue-tint-2);
}
.mini-row .n { font-size: .9rem; color: var(--ink-2); font-weight: 600; }
.mini-row .p { font-size: .95rem; color: var(--blue-900); font-weight: 750; white-space: nowrap; }
.hero-card .foot { font-size: .8rem; color: var(--ink-3); text-align: center; margin: 12px 0 0; }

/* --------------------------- badges bar --------------------------- */
.trustbar { border-bottom: 1px solid var(--line); background: var(--white); }
.trustbar .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.trust-item { padding: 22px 20px; border-right: 1px solid var(--line-2); }
.trust-item:last-child { border-right: 0; }
.trust-item b { display: block; color: var(--ink); font-size: .97rem; margin-bottom: 3px; }
.trust-item span { font-size: .86rem; color: var(--ink-3); }

/* --------------------------- cards ------------------------------- */
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #d7e6f5; }

.icon-box {
  width: 40px; height: 40px; border-radius: 11px; background: var(--blue-tint);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
  color: var(--blue-700);
}
.icon-box svg { width: 21px; height: 21px; }
.card p { font-size: .93rem; color: var(--ink-3); margin: 0; }

/* --------------------------- product card ------------------------ */
.product-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column; position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #d7e6f5; }
.product-art {
  margin: -22px -22px 18px; border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden; background: var(--blue-tint); line-height: 0;
}
.product-art svg { width: 100%; height: auto; display: block; }

.product-tags {
  position: absolute; top: 14px; left: 14px; right: 14px;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.ptag--star { background: #fff6e2; color: var(--amber); }
.ptag {
  background: rgba(255, 255, 255, .94); color: var(--blue-900);
  font-size: .68rem; font-weight: 700; letter-spacing: .02em;
  padding: 3px 9px; border-radius: 999px;
  box-shadow: 0 1px 4px rgba(17, 19, 24, .14);
}

.product-card .badge {
  position: absolute; top: 14px; right: 14px;
  background: rgba(255, 255, 255, .94); color: var(--blue-900);
  box-shadow: 0 1px 4px rgba(17, 19, 24, .16); backdrop-filter: blur(4px);
  font-size: .7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
}
.product-card .kicker {
  font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 7px;
}
.product-card h3 { font-size: 1.06rem; margin-bottom: 3px; }
.product-card .variant { font-size: .9rem; color: var(--blue-700); font-weight: 620; margin-bottom: 12px; }
.product-card .form-line {
  font-size: .82rem; color: var(--ink-3); padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.price-block { margin-bottom: 14px; }
.price-tier {
  display: inline-block; font-size: .7rem; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; color: var(--amber); background: var(--amber-tint);
  padding: 3px 9px; border-radius: 999px; margin-bottom: 7px;
}
.price { font-size: 1.62rem; font-weight: 800; color: var(--ink); letter-spacing: -.03em; line-height: 1.1; }
.price small { font-size: .82rem; font-weight: 600; color: var(--ink-3); letter-spacing: 0; }
.price-note { font-size: .8rem; color: var(--ink-3); margin-top: 5px; }
.feat { display: grid; gap: 7px; margin: 0 0 18px; }
.feat li { display: flex; gap: 8px; font-size: .875rem; color: var(--ink-2); line-height: 1.5; }
.feat li::before { content: '✓'; color: var(--green); font-weight: 800; flex: none; }
.product-card .cta { margin-top: auto; display: grid; gap: 8px; }

/* group heading inside catalogue */
.group-head {
  display: flex; align-items: center; gap: 14px; margin: 44px 0 20px;
}
.group-head:first-child { margin-top: 0; }
.group-head h3 { margin: 0; font-size: 1.28rem; white-space: nowrap; }
.group-head::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* --------------------------- retail callout ---------------------- */
.retail-note {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  background: var(--amber-tint); border: 1px solid #f2ddb8;
  border-radius: var(--radius); padding: 18px 22px;
}
.retail-note .txt { flex: 1; min-width: 260px; }
.retail-note b { color: #7a4b00; }
.retail-note p { margin: 0; font-size: .93rem; color: #7a4b00; }

/* --------------------------- compare table ----------------------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
table.cmp { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .92rem; }
table.cmp th, table.cmp td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line-2); }
table.cmp thead th {
  background: var(--blue-tint-2); color: var(--ink); font-weight: 700; font-size: .82rem;
  letter-spacing: .05em; text-transform: uppercase; white-space: nowrap;
}
table.cmp tbody tr:last-child td { border-bottom: 0; }
table.cmp tbody tr:hover { background: var(--blue-tint-2); }
table.cmp td.p { font-weight: 750; color: var(--blue-900); white-space: nowrap; }
table.cmp td.name { font-weight: 620; color: var(--ink); }

/* --------------------------- steps ------------------------------- */
.steps { counter-reset: s; display: grid; gap: 18px; }
.step {
  display: grid; grid-template-columns: 42px 1fr; gap: 16px; align-items: start;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
}
.step-n {
  counter-increment: s; width: 34px; height: 34px; border-radius: 50%;
  background: var(--blue-900); color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 750; font-size: .93rem;
}
.step-n::before { content: counter(s); }
.step h3 { font-size: 1.02rem; margin-bottom: 3px; }
.step p { margin: 0; font-size: .92rem; color: var(--ink-3); }

/* --------------------------- FAQ --------------------------------- */
.faq { display: grid; gap: 10px; max-width: 860px; margin: 0 auto; }
.faq details {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 0 20px; transition: border-color .15s ease;
}
.faq details[open] { border-color: #cfe2f5; box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer; list-style: none; padding: 17px 32px 17px 0; position: relative;
  font-weight: 650; color: var(--ink); font-size: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-size: 1.35rem; font-weight: 400; color: var(--blue-700); line-height: 1;
}
.faq details[open] summary::after { content: '–'; }
.faq .ans { padding: 0 0 18px; font-size: .94rem; color: var(--ink-3); }
.faq .ans p:last-child { margin-bottom: 0; }

/* --------------------------- CTA band ---------------------------- */
.cta-band {
  background: linear-gradient(135deg, var(--blue-900), #17558f 65%, var(--blue-700));
  color: #d7e8f8; border-radius: var(--radius-lg); padding: 44px; text-align: center;
}
.cta-band h2 { color: #fff; margin-bottom: 10px; }
.cta-band p { max-width: 60ch; margin: 0 auto 24px; color: #c6ddf3; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-band .zalo-num { font-size: 1.5rem; font-weight: 800; color: #fff; letter-spacing: -.01em; }

/* --------------------------- contact cards ----------------------- */
.contact-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.contact-card .icon-box { margin: 0 auto 14px; }
.contact-card b { display: block; color: var(--ink); font-size: 1.02rem; margin-bottom: 3px; }
.contact-card .val { font-size: 1.05rem; font-weight: 750; color: var(--blue-700); margin-bottom: 4px; word-break: break-word; }
.contact-card span { font-size: .87rem; color: var(--ink-3); }

/* --------------------------- footer ------------------------------ */
.site-footer { background: var(--white); border-top: 1px solid var(--line); padding: 54px 0 0; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 34px; }
.foot-brand p { font-size: .9rem; color: var(--ink-3); max-width: 34ch; margin: 14px 0 16px; }
.foot-col h4 { font-size: .78rem; letter-spacing: .11em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.foot-col ul { display: grid; gap: 9px; }
.foot-col a, .foot-col li { font-size: .91rem; color: var(--ink-2); }
.foot-col a:hover { color: var(--blue-700); }
.foot-bottom {
  margin-top: 40px; border-top: 1px solid var(--line-2); padding: 18px 0 26px;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  font-size: .84rem; color: var(--ink-3);
}
.foot-bottom .legal { display: flex; gap: 18px; flex-wrap: wrap; }
.disclaimer { font-size: .79rem; color: var(--ink-3); line-height: 1.6; margin-top: 6px; }

/* --------------------------- floating zalo ----------------------- */
.zalo-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 80;
  display: inline-flex; align-items: center; gap: 10px;
  background: #0068ff; color: #fff; padding: 12px 20px; border-radius: 999px;
  font-weight: 700; font-size: .93rem; text-decoration: none !important;
  box-shadow: 0 8px 26px rgba(0, 104, 255, .38);
  transition: transform .15s ease, box-shadow .15s ease;
}
.zalo-float:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0, 104, 255, .46); }

/* --------------------------- misc -------------------------------- */
.page-head { background: var(--white); border-bottom: 1px solid var(--line); padding: 52px 0 44px; }
.page-head .eyebrow { margin-bottom: 8px; }
.page-head h1 { font-size: clamp(1.8rem, 1.3rem + 2vw, 2.7rem); margin-bottom: 12px; }
.page-head p { font-size: 1.04rem; color: var(--ink-3); max-width: 62ch; margin: 0; }
.breadcrumb { font-size: .84rem; color: var(--ink-3); margin-bottom: 16px; }
.breadcrumb a { color: var(--ink-3); }

.note-box {
  background: var(--blue-tint-2); border: 1px solid #dbeafd; border-left: 3px solid var(--blue-600);
  border-radius: var(--radius-sm); padding: 16px 20px; font-size: .93rem; color: var(--ink-2);
}
.note-box p:last-child { margin-bottom: 0; }

.link-list { display: grid; gap: 10px; }
.link-list a {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 14px 18px; color: var(--ink); font-weight: 600; font-size: .94rem;
  text-decoration: none !important;
}
.link-list a:hover { border-color: var(--blue-600); color: var(--blue-700); background: var(--blue-tint-2); }
.link-list a span { font-size: .84rem; color: var(--ink-3); font-weight: 500; }

.quote-form { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label { font-size: .85rem; font-weight: 650; color: var(--ink); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .94rem; padding: 11px 14px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: var(--white); color: var(--ink); width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(140,195,247,.35);
}
.field textarea { min-height: 92px; resize: vertical; }
.form-hint { font-size: .82rem; color: var(--ink-3); margin: 0; }

/* --------------------------- responsive -------------------------- */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .trustbar .wrap { grid-template-columns: 1fr 1fr; }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(1), .trust-item:nth-child(2) { border-bottom: 1px solid var(--line-2); }
}
@media (max-width: 860px) {
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .site-header.open .nav-menu {
    display: block; position: absolute; left: 0; right: 0; top: 100%;
    max-height: calc(100vh - 120px); overflow-y: auto;
    background: var(--white); border-bottom: 1px solid var(--line);
    padding: 12px 22px 18px; box-shadow: var(--shadow);
  }
  .site-header.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px; margin: 0 0 14px;
  }
  /* Trên mobile: menu con hiện thẳng trong danh sách, không cần bấm mở */
  .site-header.open .nav-sub-toggle { display: none; }
  .site-header.open .nav-sub {
    position: static; opacity: 1; visibility: visible; transform: none;
    min-width: 0; padding: 0; border: 0; box-shadow: none; background: none;
  }
  .site-header.open .nav-sub a { padding: 9px 13px; }
  .site-header.open .nav-sub a span { display: none; }
  .site-header.open .nav-actions { display: flex; margin: 0; }
  .site-header.open .nav-actions .btn { flex: 1; }
  .grid-3 { grid-template-columns: 1fr; }
  .topbar-links a:not(:last-child) { display: none; }
}
@media (max-width: 620px) {
  .section { padding: 52px 0; }
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 32px 22px; }
  .trustbar .wrap { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid var(--line-2); }
  .zalo-float { right: 12px; bottom: 12px; padding: 11px 17px; font-size: .88rem; }
  .topbar { font-size: .76rem; }
}

@media print {
  .site-header, .zalo-float, .cta-band, .site-footer { display: none; }
}